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-rw-r--r--kernel/audit.c6
-rw-r--r--kernel/auditfilter.c3
-rw-r--r--kernel/capability.c21
-rw-r--r--kernel/hrtimer.c8
-rw-r--r--kernel/rcuclassic.c16
-rw-r--r--kernel/sched.c4
-rw-r--r--kernel/softlockup.c1
-rw-r--r--kernel/workqueue.c2
8 files changed, 55 insertions, 6 deletions
diff --git a/kernel/audit.c b/kernel/audit.c
index e8692a5748c..e092f1c0ce3 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -738,7 +738,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (!audit_enabled && msg_type != AUDIT_USER_AVC)
return 0;
- err = audit_filter_user(&NETLINK_CB(skb), msg_type);
+ err = audit_filter_user(&NETLINK_CB(skb));
if (err == 1) {
err = 0;
if (msg_type == AUDIT_USER_TTY) {
@@ -779,7 +779,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
}
/* fallthrough */
case AUDIT_LIST:
- err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
+ err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
uid, seq, data, nlmsg_len(nlh),
loginuid, sessionid, sid);
break;
@@ -798,7 +798,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
}
/* fallthrough */
case AUDIT_LIST_RULES:
- err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
+ err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
uid, seq, data, nlmsg_len(nlh),
loginuid, sessionid, sid);
break;
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 0e0bd27e651..98c50cc671b 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1544,6 +1544,7 @@ static void audit_log_rule_change(uid_t loginuid, u32 sessionid, u32 sid,
* @data: payload data
* @datasz: size of payload data
* @loginuid: loginuid of sender
+ * @sessionid: sessionid for netlink audit message
* @sid: SE Linux Security ID of sender
*/
int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
@@ -1720,7 +1721,7 @@ static int audit_filter_user_rules(struct netlink_skb_parms *cb,
return 1;
}
-int audit_filter_user(struct netlink_skb_parms *cb, int type)
+int audit_filter_user(struct netlink_skb_parms *cb)
{
enum audit_state state = AUDIT_DISABLED;
struct audit_entry *e;
diff --git a/kernel/capability.c b/kernel/capability.c
index cfbe4429948..901e0fdc3ff 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -121,6 +121,27 @@ static int cap_validate_magic(cap_user_header_t header, unsigned *tocopy)
* uninteresting and/or not to be changed.
*/
+/*
+ * Atomically modify the effective capabilities returning the original
+ * value. No permission check is performed here - it is assumed that the
+ * caller is permitted to set the desired effective capabilities.
+ */
+kernel_cap_t cap_set_effective(const kernel_cap_t pE_new)
+{
+ kernel_cap_t pE_old;
+
+ spin_lock(&task_capability_lock);
+
+ pE_old = current->cap_effective;
+ current->cap_effective = pE_new;
+
+ spin_unlock(&task_capability_lock);
+
+ return pE_old;
+}
+
+EXPORT_SYMBOL(cap_set_effective);
+
/**
* sys_capget - get the capabilities of a given process.
* @header: pointer to struct that contains capability version and
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 421be5fe5cc..ab80515008f 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1003,10 +1003,18 @@ hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode)
*/
raise = timer->state == HRTIMER_STATE_PENDING;
+ /*
+ * We use preempt_disable to prevent this task from migrating after
+ * setting up the softirq and raising it. Otherwise, if me migrate
+ * we will raise the softirq on the wrong CPU.
+ */
+ preempt_disable();
+
unlock_hrtimer_base(timer, &flags);
if (raise)
hrtimer_raise_softirq();
+ preempt_enable();
return ret;
}
diff --git a/kernel/rcuclassic.c b/kernel/rcuclassic.c
index f4ffbd0f306..a38895a5b8e 100644
--- a/kernel/rcuclassic.c
+++ b/kernel/rcuclassic.c
@@ -89,8 +89,22 @@ static void force_quiescent_state(struct rcu_data *rdp,
/*
* Don't send IPI to itself. With irqs disabled,
* rdp->cpu is the current cpu.
+ *
+ * cpu_online_map is updated by the _cpu_down()
+ * using stop_machine_run(). Since we're in irqs disabled
+ * section, stop_machine_run() is not exectuting, hence
+ * the cpu_online_map is stable.
+ *
+ * However, a cpu might have been offlined _just_ before
+ * we disabled irqs while entering here.
+ * And rcu subsystem might not yet have handled the CPU_DEAD
+ * notification, leading to the offlined cpu's bit
+ * being set in the rcp->cpumask.
+ *
+ * Hence cpumask = (rcp->cpumask & cpu_online_map) to prevent
+ * sending smp_reschedule() to an offlined CPU.
*/
- cpumask = rcp->cpumask;
+ cpus_and(cpumask, rcp->cpumask, cpu_online_map);
cpu_clear(rdp->cpu, cpumask);
for_each_cpu_mask(cpu, cpumask)
smp_send_reschedule(cpu);
diff --git a/kernel/sched.c b/kernel/sched.c
index 996bc15196a..827c1b416da 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6075,6 +6075,7 @@ static void migrate_dead_tasks(unsigned int dead_cpu)
next = pick_next_task(rq, rq->curr);
if (!next)
break;
+ next->sched_class->put_prev_task(rq, next);
migrate_dead(dead_cpu, next);
}
@@ -8755,6 +8756,9 @@ int sched_group_set_rt_period(struct task_group *tg, long rt_period_us)
rt_period = (u64)rt_period_us * NSEC_PER_USEC;
rt_runtime = tg->rt_bandwidth.rt_runtime;
+ if (rt_period == 0)
+ return -EINVAL;
+
return tg_set_bandwidth(tg, rt_period, rt_runtime);
}
diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index c828c2339cc..a272d78185e 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -120,6 +120,7 @@ void softlockup_tick(void)
printk(KERN_ERR "BUG: soft lockup - CPU#%d stuck for %lus! [%s:%d]\n",
this_cpu, now - touch_timestamp,
current->comm, task_pid_nr(current));
+ print_modules();
if (regs)
show_regs(regs);
else
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 29fc39f1029..ce7799540c9 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -13,7 +13,7 @@
* Kai Petzke <wpp@marie.physik.tu-berlin.de>
* Theodore Ts'o <tytso@mit.edu>
*
- * Made to use alloc_percpu by Christoph Lameter <clameter@sgi.com>.
+ * Made to use alloc_percpu by Christoph Lameter.
*/
#include <linux/module.h>